How to Calculate Tree Age: Complete Guide to Methods, Science, and the World’s Oldest Trees

Grand Slams: Australian Open, French Open, Wimbledon, US Open (main draw and qualifying)
ATP/WTA Tours: Masters 1000, ATP 500/250, WTA 1000/500/250 tournaments
ITF World Tennis Tour: Entry-level professional tournaments (M15/M25/W15/W25)
Challengers: ATP Challenger Tour / WTA 125 tournaments
Team Competitions: Davis Cup (men), Billie Jean King Cup (women)
Olympic Games: Tennis at the Olympics (if qualified)

Emma Carter / March 29, 2026

You are standing in front of a massive oak in your backyard. Its trunk is wide, its branches stretch across […]